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https://github.com/RobTillaart/Arduino.git
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78 lines
1.6 KiB
C++
78 lines
1.6 KiB
C++
//
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// FILE: fastShiftIn_readLSBFIRST.ino
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// AUTHOR: Rob Tillaart
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// VERSION: 0.1.1
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// PURPOSE: test sketch
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// URL: https://github.com/RobTillaart/FastShiftIn
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//
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#include "FastShiftIn.h"
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FastShiftIn FSI(12, 13);
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volatile int x = 0;
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void setup()
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{
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Serial.begin(115200);
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Serial.println(__FILE__);
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Serial.println(FASTSHIFTIN_LIB_VERSION);
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digitalWrite(12, HIGH);
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Serial.println("\n 8 bits HIGH - readLSBFIRST\n");
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Serial.println("\nPerformance - time in us");
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uint32_t start = micros();
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for (int i = 0; i < 1000; i++)
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{
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x = FSI.readLSBFIRST();
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}
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uint32_t duration1 = micros() - start;
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Serial.print("FastShiftIn1: ");
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Serial.println(duration1 * 0.001);
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start = micros();
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for (int i = 0; i < 1000; i++)
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{
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x = FSI.readLSBFIRST();
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x = FSI.readLSBFIRST();
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}
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uint32_t duration2 = micros() - start;
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Serial.print("FastShiftIn2: ");
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Serial.println(duration2 * 0.001);
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Serial.print(" Delta: ");
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Serial.println((duration2 - duration1) * 0.001);
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Serial.println();
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start = micros();
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for (int i = 0; i < 1000; i++)
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{
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x = shiftIn(12, 13, LSBFIRST);
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}
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duration1 = micros() - start;
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Serial.print("Standard shiftIn1: ");
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Serial.println(duration1 * 0.001);
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start = micros();
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for (int i = 0; i < 1000; i++)
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{
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x = shiftIn(12, 13, LSBFIRST);
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x = shiftIn(12, 13, LSBFIRST);
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}
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duration2 = micros() - start;
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Serial.print("Standard shiftIn2: ");
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Serial.println(duration2 * 0.001);
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Serial.print(" Delta: ");
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Serial.println((duration2 - duration1) * 0.001);
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Serial.println();
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Serial.println("done...");
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}
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void loop()
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{
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}
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// -- END OF FILE --
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